Curtain roll



Dec. 19, 1922 1,438,997. mimz.

CURTAIN ROLL. v FILED AUG. 8. 1921. v v 2 SHEETS-SHEET 2.

grt/vento@ aitozm www; es..

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ERNEST E. HEINTZ, MICHTGAN, ASSTGNOE, '20 'I'RNSTEDTMANFAC- TURING COMPANY, 0F DETROIT, .MICH

TGAN Y ACORPORATION 0F L'JHIGAN.

" CURTAIN sont.

To allwtom t may concern.'

Be it known that T, ERNEST E. HEINTZ, a` citizen voit the United States, residing at Detroit, in the county of Viayne and'State ot Michigan. hziveinvented certain nen7 and uset'ul linprovenients in Curtain Rolls, ot which the following is specification.

This invention relates to curtain rolls, and has 'tor its object a curtain roll soy dosigned as to lend itseltl to large production in an economical and rapid wey. vlhe roll is further so designed as to eliminate as is possible ell vibrating parts which are lia-ble to cause annoying rattling when the curtain roll is installed in a closedbodY automol-Jile. These and other features Will be better understood when the detailed de`- sciiption hns been given.

Tn the draivings, Fig. l is an elevationot thelong curtain rod before the salme has been. assembled.`

Fig. 2 is an enlarged detail et the end oi the curtain rod showing the detent recess and the shoulder.

Fig. 3 is a longitudinal section ot'the ma-` or sub-assembly which includes the Washers and spring. n

Fig. i is nn enlarged View taken on the line #l-i ofllig.

Figure 5 is an enlarged View line 5.-5 of Fig. 5.

Fig. (i is an enlarged line (3-6 ot' Fig. 3. p Fig. 7 is an enlarged line 7 7 of Fig. 4

Fig. El is en enlarged line 8-8 of Fig. 3.

Figs, 9 and 9 are longitudinal sections ot' the right hand end oit the curtain roll show# ing how the end plate is assembled to the barrel.

Fig. l() is afriew hilfen on the line Iii-fl() oi: Fig.

Fig, Il a View showing how the lel't hand end oi' the roll is assembled,

`l*`ig. l? is an enlarged ffrossseetion taken on the line .19.*152 of Fig. 5.). i Fig. i3 shows the curtain roll assembled onto the brackets. i '4 Fig.` '14 is an insile View off the right hand bracket, 3 Fig. 15 is a section on the line 1.515 of The barrel is mede oi lock-seam tubing` und is designated a. This lock-seein tubing'- t'alren on the section taken on the section talien on the section teken on the sent.

is of a character rsuch as shown in Fig. l2 `and is inade in continuous lengths on rolls or rollsanddies. vThe 'tubing is then vcut into lengths such es shown in Fig. 9 and notches Y) cut intheyends of the tube by a puncliing operation. The dies by which the punching operation is achieved can also `be provided with points to press the projections c and el in the barrel to fact es stops for a purpose presently to be described.

The rod e is placed in eV press with suitable dies for upsetting the end to provide the annular shoulder 7". Between the shoulder and the end a flat g milled on the rod and on the inside oi" the shoulder is milled a segmental recess `to form a pawl recess 7b. y `dition and the felt Washer or bearing z' The rod is taken in this conslipped onto the end Next the `pawl cup sub-assembly or bearing j is slipped `onto "the rod. This isa drawn brass cup With an extending hub 7c that forms a long bearing surface' on the rod and also a spring Into this v--cup '7' is `placed a metal washer m ("Fig. 'lhfe-paivl carrier `disk n is then inserted. This ldisk is provided withal sliding gravity paivl or dop; 0. The edge of the cup is then turned over as" at p, finishing the paWlsub-assenibly.

The clothor fabric `sleeve (j isthen slipped over the rod for the purpose of preventing" the coils engaging` the rod andI rattling. Nefit the torsional spring" a" is slipped onto the end of the rod e. The coils at the lett `hand `end oit' this torsional spring ere smaller than the diameter ofy the rod. Hence to assembleit is found advantageous to place the spring in a tube provided ivtlra shoulder to hold the innenend ot the'spring. The rod may 4then be driven down through the smaller spring coils. This jams the spring onto the rod with such a tight press titthat it is e ui'valent to dessine" the spring through the rod to tieone end et the spring to the rodv Next the spring and rod are taken inthe hand and b v turning the spring and at the same time forcing it up overthe hub: ot the paivl assembly, itis possible to screw the right hand'end of the spring onto the hub ofthe paWl assemblgT to malte a press t. This is equivalent tok tying the right hand end of the spring to the pawl assembly by 'some positive means,

such as passing the end of the spring through a hole.' The neXt operation is to ies keys or stops v on lthe end of the rod. Thisv completes the major sub-assembly which includes, as already stated, the minor subassembly7 to-wit, the pawl-carrier. i

New it has been explained how the barrel ist made :and notched and punched. The

barrel is new Etaken and the Vmajor sub- -assembly placed in the righthand end 4oli the barrel. Any suitable presscan nowvbe used to `torce the'rod down, into the barrel. The lpawl carrier lassembly will strike the projections or points ,d fand rwillgofno farther. Theuirod will-eontinueuntil thete'lt washer. e strikes the p awl cup. This, `,when compressed, willstop further` entry of the rod rinto the barrel. Ott course, a ligeht pressure ,fraInI-is used tor this purpose :which will not` forcev the parts lbeyond the; stops.

lNeXt the `end plate 'fw is placed over the lugs 4wliprotrudir.1g front the; notched end of the barrel. This `is placed 4in a :suitable light presswhich bya coupleof operations with two` separate l dies folds vover v the l lugs tovlock v.thefendwplates in place. lThis'now prevents the subfassembly; from sliding `out ofthe-end of the, barrel. Thebarrel is now placed over Ian-.arbor which seatsthe inner end of the `rod .andactsas :an anvil. Thereuponga press `andram is-used Yto dri-ve the bracketshown in Figs. 14 andl vdown upon thelattened-end giof'the-rod. The opening 5 in the casting that forms the bracket is of slightly less size -than the atted end ot the rod sand?consequently requires a press operation` to .force yth\is bracket dow-nente gthe endet therod. Then pressed lin place in this manner `the, rod and bracket.are.lockedtogether `as a unitand will not come loose. This bracketfwhen locked vin place,` holds the fred, from pressinginto theharrel, duetothe compressibility of the .eltwasher The-rody must `he held ina prescribed position withvrespectlto-the barrel `or the `pawl -will not line up with the pawl recess. j .j

The next operationds t0 place into the lelf't hand enf'tolithe harrclnnxva `her. cup y/,containingthe felt \f*asher The end plate l is. then placed over .thetlugs Q ouwthe left hanche-nd .of the barrel vand theselugs are turned overin `praeticallyfthe same way as the lugsat `the othereud el the barrel. It will be seenthatdihe .points c stop the washer c up g/ trom :traveling .further `inward,Qwhile the `end plate 1 stopsy the cup.tronntrayeling outward `when `the lend plate ,has `-been .locked in place. y j i `,Each of thel felt washers is notched, shown indFigs. It, ,5 and 7. Soralsois .the pawl earrienesshown in Rigs. 1.6 vand8.

These notches term key-way segments adapted to acconnnodate the lock-seam 3, as

shown in Fig. 12, to key these felt washers- `'7 Vwhiehtis. soldered or in any suitable way pressed into' the bracket to become a fixed part thereof. Hence when this stud is insertedinthe opening in the felt washer z andi-fthe bracket secured `by screws to the support (the right hand bracket having also been securedby screws to thesupport), the entire rollt-assembly is completed.

The detailsiof theinanutacturing operations have been 'rather minutely described beca-use :they have a bearing on` the design of the structureitself. Many of the elements are given their novel design and arrangement largely `in vwconsideration of economical andr expeditious manufacturing methods.

It is. also tobenotedl that in this assembly thepawl-carrier carries only fa single pa-wl and islocatedfatthe extremeright of the barrel. Ey usingrasingle p'awl only one pawl is in the pawl carrier and this is always caught. l Where two pawls are used one pawl is always free and vibrating up and down? making an objectionable noise. Also when` a pawl carrier of this type is located at the center of the barrel, as it haslbeen in some previous ypatent disclosures, .the pawl carrier is ,iny apposition where itis subjected to the maximum vibration.

'What I clairnis: y

1. In a curtain roll, the combination of a barrel-` `a rodsupported in said.` barrel fand provided with a paw] recess.. a pawl carrier keyed to. the barrel andanouuted Ato rotate about the rod and provided with ya `pawl arrangedto engage .the pawl recess and valso having an extended hub, and a coiled springv having .a pressit .overthe hub at one end and a press fit over the rod at Athe other end to anchor. the spring tothe barrel andato the rod. v

42. In a curtain roll, the combination 'of a barrel, a rod upon which the barrel is mounted to rotate. said fred being provided with a paw] recess'. a pawl carrier provided with a paw] adapted to engage said recess and havingan `extended hub7 anda spring secured at one cud lto the rod aud secured at its opposite end to `the hub by having a pressfit over said huh.

3. In a curtain roll, the combinatimi of a barrel, a rod upon which the barrel is mounted to rotate, and a torsion spring coiled about the rod and havingcne `end connected with the barrel to rotatetherewith andhaving the otherend provided. with a ,press fit over the rod.

leo

4;. ln a Curtain roll, the combination oi. a barrel provided with one or more projections pressed therein near one end, a rod provided with a pawl recess and arranged to have a definite position with respect to the end of the barrel, and a pawl carrier provided with a pawl, said pawl carrier adapted to engage about the rod and be located in proper proximity to the pawl recess by reason of engaging against said projection or projections pressed in the barrel,

5. In a curtain roll, a major sub-assembly comprising a rod provided with a shoulder on its outside end, a bearing member intended to rotate on the rod and threaded on the rod inside of said shoulder, a spring secured to the member at one end and at the other end secured to the rod, a second bearing member at the inner end oi the spring arranged to rotate on the rod, and means on the inner end oi the rod tor holding' the first and second bearing members and the spring from disengaging lfrom the inneiI end of the rod.

6. In a curtain roll, a major sub-assembly comprising a rod provided with a shoulder on its outer end, a bearing member retained on the inside of said shoulder and arranged to rotate on the rod, a spring secured at its outer end to said bearing member and secured at its inner end to the rod, a second bearing member at the inner end ot the spring, and keys upset on the end of the rod for holding the two bearing members and the spring from sliding oit' the inner end of the rod.

7. In a curtain roll, a-major sub-assen'ibly comprising a curtain rod provided with a shoulder at its outer end, a telt washer engaging the inside of a said shoulder, a pawl carrier or bearing member engaging on the rod to the inside ot the telt washer, a spring engaging about the rod and having its outer end secured to the pawl carrier, a telt washer secured on the rod at the inner end of 'the sprinvf, and means on the inner end ot the rod ior holding the parts assembled on the said rod.

8. 1n a curtain roll, a major sub-assembly comprising a rod l'laviug a shoulder on its outer end` a 'telt Washer threaded on the rod to the inside ot the shoulder` a pavvl carrier or bearing member threaded on the rod on the inside of the telt washer and provided'l with a relatively long hub portion, a coiled torsional spring having a press fit on said hub portion of the pawl carrier and having its inner end in a press lit on the inner end ot the rod, a felt washer threaded on the rod at the inner end of the spring, and means on the inner end of the rod for holding the felt Washer and the other parts assembled on the rod.

9. ln a curtain roll, a major sub-assembly comprising a curtain rod provided `with a paul recess and a shoulder on its outer end, a telt washer threaded on the rod on the inside ot the shoulder, a pavvl carrier in the form of a metal cup provided with a hub portion threaded on the rod on the inside of the telt washer and serving as a bearing member, said pawl carrier also provided with a pawl adapted to engage the pawl recess in the rod, a torsional spring engaging about the rod and the hub ot the pawl carrier and secured to the latter, a telt washer threaded on the rod at the inner end oit the spring, and means on the inner end of the rod for preventing the second felt washer and the other parts coming ott the rod.

l0. In a curtain roll, the combination of a barrel, a rod lupon which the barrel is mounted to rotate and provided with a pawl recess, a pawl carrier and pavvl keyed to the barrel, the said rod provided with a shoulder near its outer end, a cap plate threaded on the rod and adapted to engage the outside of the shoulder, said cap plate being secured to the end of the barrel, and a bracket having a tight press t over the outer end of the rod to hold the rod stationary when the barrel rotates and hold the rod from inward movement with respect to the barrel.

11. In a curtain roll, the combination of a barrel provided with notched ends forming lugs and having one or more projections pressed into the side of the barrel near such end, a rod having a shoulder at its outer end, one or more bearing members fitted onto said rod at the inside o said shoulder and held by and between the shoulder and the projection or proiections in the barrel which act as stops, and a slot-ted end plate tted over the lugs on the end of the barrel which lugs are folded down en the outside ot the plate, said plate engaging the outside oit the shoulder on the end oic the rod,

12. In a curtain roll, the combination ot a barrel provided with a notched end forming projecting lugs and having one or more projections indented inthe side of the barrel to act as stops7 a rod provided with a shoulder at its outer end having a pawl recess cut in the rod to the inside ot the shoulder, a pawl carrier including a metal cup thread-- ed on said rod and engaged against the ont side ofthe projection or projections in the sides ot the barrel, the inside of the shoulder serving to retain the pawl carrier :trom sliding outwardly on the rod, and a slotted plate adapted to it over the lugs on the end ot the barrel and threaded to the outside of said shoulder on the rod, the said lugs being folded over to retain the plate in place.

In testimony whereof l atiix my signature.

ERNEST E. HEINTZ. 

